Add 84/72 and 21/54
1st number: 1 12/72, 2nd number: 21/54
84/72 + 21/54 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
84/72 = 84 × 3/72 × 3 = 252/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216 - Add the two like fractions:
252/216 + 84/216 = 252 + 84/216 = 336/216 - 336/216 simplified gives 14/9
- So, 84/72 + 21/54 = 14/9
In mixed form: 15/9
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